Why is Ganluo County called Jiagu Ganluo?

The Yi language name of Ganluo County is "Jiagu Ganluo", in which "Jiagu" means Ai Shan or Pingba area in Yi language. Ganluo County is located in the southwest of Liangshan Yi Autonomous Prefecture, bordering mabian river in the east and Ebian County in Leshan City, facing Yanyuan County in Liangshan Prefecture in the south, Yuexi County and Ebian County in Liangshan Prefecture in the west, and Shimian County and Hanyuan County in Ya 'an City in the north. It is the gateway to the southeast of Liangshan Prefecture.